Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait
Amino acids (AA) and carbohydrates (CHO) are important components of the marine organic carbon cycle. Produced mainly by phytoplankton as part of the particulate organic carbon (POC) fraction, these compounds can be released into the outer medium where they become part of the dissolved organic carbo...
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ftawi:oai:epic.awi.de:54503 2024-09-15T17:53:37+00:00 Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait Grosse, Julia Nöthig, Eva-Maria Torres-Valdes, Sinhue Engel, Anja 2021-07-01 https://epic.awi.de/id/eprint/54503/ https://hdl.handle.net/10013/epic.f3132789-6436-4f6c-86dc-b71ac7d4b679 unknown Grosse, J. orcid:0000-0002-2022-9158 , Nöthig, E. M. orcid:0000-0002-7527-7827 , Torres-Valdes, S. orcid:0000-0003-2749-4170 and Engel, A. (2021) Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait , frontiers in Marine Science . doi:10.3389/fmars.2021.684675 <https://doi.org/10.3389/fmars.2021.684675> , hdl:10013/epic.f3132789-6436-4f6c-86dc-b71ac7d4b679 EPIC3frontiers in Marine Science Article isiRev 2021 ftawi https://doi.org/10.3389/fmars.2021.684675 2024-06-24T04:27:29Z Amino acids (AA) and carbohydrates (CHO) are important components of the marine organic carbon cycle. Produced mainly by phytoplankton as part of the particulate organic carbon (POC) fraction, these compounds can be released into the outer medium where they become part of the dissolved organic carbon (DOC) pool and are rapidly taken up by heterotrophs (e.g., bacteria). We investigated the quantity and quality of POC and DOC, AA and CHO composition in both pools in three different water masses in the Fram Strait (Arctic Ocean) in summer 2017. Polar Waters and Atlantic Waters showed similar concentrations of particulate and dissolved AA and CHO, despite Polar Waters showing the highest DOC concentrations. In Mixed Waters, where the two water masses mix with each other and with melting sea ice, the concentrations of particulate and dissolved AA and CHO were highest. AA and CHO composition differed substantially between the particulate and dissolved fractions. The particulate fraction (>0.7 μm) was enriched in essential AA and the CHO galactose, xylose/mannose, and muramic acid. In the dissolved fraction non-essential AA, several neutral CHO, and acidic and amino CHO were enriched. We further investigated different size fractions of the particulate matter using a separate size fractionation approach (0.2–0.7 μm, 0.7–10 μm and >10 μm). The chemical composition of the 0.2–0.7 μm size-fraction had a higher contribution of non-essential AA and acidic and amino sugars, setting them apart from the 0.7–10 μm and >10 μm fractions, which showed the same composition. We suggest that the relative differences observed between different size fractions and DOC with regards to AA and CHO composition can be used to evaluate the state of organic matter processing and evaluate the contribution of autotrophic phytoplankton or more heterotrophic biomass. In the future, changing conditions in the Central Arctic Ocean (Atlantification, warming, decreasing ice concentrations) may increase primary production and consequently ... Article in Journal/Newspaper Arctic Ocean Fram Strait Phytoplankton Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Frontiers in Marine Science 8 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Amino acids (AA) and carbohydrates (CHO) are important components of the marine organic carbon cycle. Produced mainly by phytoplankton as part of the particulate organic carbon (POC) fraction, these compounds can be released into the outer medium where they become part of the dissolved organic carbon (DOC) pool and are rapidly taken up by heterotrophs (e.g., bacteria). We investigated the quantity and quality of POC and DOC, AA and CHO composition in both pools in three different water masses in the Fram Strait (Arctic Ocean) in summer 2017. Polar Waters and Atlantic Waters showed similar concentrations of particulate and dissolved AA and CHO, despite Polar Waters showing the highest DOC concentrations. In Mixed Waters, where the two water masses mix with each other and with melting sea ice, the concentrations of particulate and dissolved AA and CHO were highest. AA and CHO composition differed substantially between the particulate and dissolved fractions. The particulate fraction (>0.7 μm) was enriched in essential AA and the CHO galactose, xylose/mannose, and muramic acid. In the dissolved fraction non-essential AA, several neutral CHO, and acidic and amino CHO were enriched. We further investigated different size fractions of the particulate matter using a separate size fractionation approach (0.2–0.7 μm, 0.7–10 μm and >10 μm). The chemical composition of the 0.2–0.7 μm size-fraction had a higher contribution of non-essential AA and acidic and amino sugars, setting them apart from the 0.7–10 μm and >10 μm fractions, which showed the same composition. We suggest that the relative differences observed between different size fractions and DOC with regards to AA and CHO composition can be used to evaluate the state of organic matter processing and evaluate the contribution of autotrophic phytoplankton or more heterotrophic biomass. In the future, changing conditions in the Central Arctic Ocean (Atlantification, warming, decreasing ice concentrations) may increase primary production and consequently ... |
format |
Article in Journal/Newspaper |
author |
Grosse, Julia Nöthig, Eva-Maria Torres-Valdes, Sinhue Engel, Anja |
spellingShingle |
Grosse, Julia Nöthig, Eva-Maria Torres-Valdes, Sinhue Engel, Anja Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait |
author_facet |
Grosse, Julia Nöthig, Eva-Maria Torres-Valdes, Sinhue Engel, Anja |
author_sort |
Grosse, Julia |
title |
Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait |
title_short |
Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait |
title_full |
Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait |
title_fullStr |
Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait |
title_full_unstemmed |
Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait |
title_sort |
summertime amino acid and carbohydrate patterns in particulate and dissolved organic carbon across fram strait |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/54503/ https://hdl.handle.net/10013/epic.f3132789-6436-4f6c-86dc-b71ac7d4b679 |
genre |
Arctic Ocean Fram Strait Phytoplankton Sea ice |
genre_facet |
Arctic Ocean Fram Strait Phytoplankton Sea ice |
op_source |
EPIC3frontiers in Marine Science |
op_relation |
Grosse, J. orcid:0000-0002-2022-9158 , Nöthig, E. M. orcid:0000-0002-7527-7827 , Torres-Valdes, S. orcid:0000-0003-2749-4170 and Engel, A. (2021) Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait , frontiers in Marine Science . doi:10.3389/fmars.2021.684675 <https://doi.org/10.3389/fmars.2021.684675> , hdl:10013/epic.f3132789-6436-4f6c-86dc-b71ac7d4b679 |
op_doi |
https://doi.org/10.3389/fmars.2021.684675 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
_version_ |
1810429512152776704 |